Home / 19,787.24-29,680.79-8,100.47

Finding the Fourth Proportional to 19,787.24, 29,680.79 and 8,100.47

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Solution

The fourth proportional to 19,787.24, 29,680.79 and 8,100.47 is: 12,150.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,787.24 : 29,680.79 = 8,100.47 : x
  2. Step 2: Convert to fraction form
    19,787.24/29,680.79 = 8,100.47/x
  3. Step 3: Cross multiply
    19,787.24x = 29,680.79 × 8,100.47
  4. Step 4: Simplify right side
    19,787.24x = 240,428,160.07
  5. Step 5: Solve for x
    x = 240,428,160.07/19,787.24
  6. Step 6: Final answer
    x = 12,150.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.